Improve Links UI and hide storage folder

Fix link saving and polish link UI

update

Default HF repo id for Space startup

Boot safely when HF token secret is missing

Default HF storage mode for Spaces startup

Deploy HF-ready DocVault with HF storage backend

Allow inline file previews by changing download attachment header

Allow file uploads to the root directory by accepting empty folder_path strings

Fix bug: allow .gitkeep for folder creation marker

Deploy to HF Spaces as Docker sdk

Fix page refresh on navigation and folder clicks - use button elements and prevent default

clean project (no secrets)